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        <DIV id=efpContent><p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树望天树又名擎天树，是近年来发现的一个新种，是</span><span lang="EN-US"><font face="Times New Roman">1975</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年才由中国云南省林业考察队在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的森林中发现的。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">简介</span></span></strong></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　属于龙脑香科，柳安属。该属共</span><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">名成员，大多分布在东南亚一带，望天树是只</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">有在中国云南才生长的特产珍稀树种。只分布在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的补蚌和广纳里新寨至景飘一带的</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">平方公里范围内。望天树的所在地，大部分为原始沟谷雨林及山地雨林。它们多成片生长，组成独立的群落，形成奇特的自然景观。生态学家们把它们视为热带雨林的标志树种，是中国的一级保护植物。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">拉丁学名</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span><span lang="EN-US"><font face="Times New Roman">Parashorea chinensis Wang Hsie </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">又名</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　擎天树</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">具体介绍</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　名称：望天树</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　学名：</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">英文名：</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">拉丁名：</span><span lang="EN-US"><font face="Times New Roman">Parashorea chinensis </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">科名：龙脑香科</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　比一比中国树木中的&ldquo;巨人&rdquo;，目前能摘取中国最高树木桂冠的，恐怕就只有高可达</span><span lang="EN-US"><font face="Times New Roman">80</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的望天树了。望天树是中国的一级保护植物。一般高达</span><span lang="EN-US"><font face="Times New Roman">60</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米，胸径</span><span lang="EN-US"><font face="Times New Roman">100</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米左右，最粗的可达</span><span lang="EN-US"><font face="Times New Roman">300</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米。高耸挺拔的树干竖立于森林绿树丛中，比周围高</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">～</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的大树还要高出</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">～</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，真是直通九霄，大有刺破青天的架式。花期为</span><span lang="EN-US"><font face="Times New Roman">3-4</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">月。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>勐腊县补蚌自然保护区，有上百棵</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">－</span><span lang="EN-US"><font face="Times New Roman">70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米高的望天树林区，当地政府架设了一条高</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米、长</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">．</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">公里的&ldquo;空中走廊&rdquo;，游人可以在上面观赏原始森林美景和野生动物。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">如果说望天树只是长得高，那当然不见得有那么珍贵，当然也无指望被列为国家一级保护植物了。它的名贵还在于它是龙脑香科植物，是热带雨林中的一个优势科。在东南亚，这个科的植物是热带雨林的代表树种之一，是热带雨林的重要标志之一。过去某些外国学者曾断言</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">中国十分缺乏龙脑香科植物</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">中国没有热带雨林</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">。然而，望天树的发现，不仅使得这些结论被彻底推翻，而且还证实了中国存在真正意义上的热带雨林。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树树体高大，干形圆满通直，不分杈，树冠象一把巨大的伞，而树干则象伞把似的的，<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的傣族因此把它称为&ldquo;埋干仲&rdquo;（伞把树）。同龙脑香科的其他乔木一样，望天树以材质优良和单株积材率高而著名于世界木材市场，据资料记载，一棵</span><span lang="EN-US"><font face="Times New Roman">60</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米左右的望天树，主干木材可达十立方米以上。其材质较重，结构均匀，纹理通直而不易变形，加工性能良好，适合于制材工业和机械加工以及较大规格的木材用途，是一种优良的工业用材树种。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5"><span style="font-size: larger"><span lang="EN-US"><font face="Times New Roman">1996</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">月，世界野生生物基金会会长、英国爱丁堡公爵、菲得普亲王参观了<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>热带植物园，并亲手种植了一株望天树。如今，这株望天树已枝繁叶茂，亭亭如盖矣。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 26.25pt; mso-char-indent-count: 2.5">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">形态特征</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树树体高大，干形圆满通直，不分杈，树冠象一把巨大的伞，而树干则象伞把似的的，<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的傣族因此把它称为&ldquo;埋干仲&rdquo;（伞把树）。常绿大乔木，高</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">50</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">（一</span><span lang="EN-US"><font face="Times New Roman">80</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）米，胸径达</span><span lang="EN-US"><font face="Times New Roman">1.5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，树干通直，枝下高多在</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米以上，大树具板根；树皮褐色或深褐色，上部纵裂，下部呈块状或不规则剥落；</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年生枝密被鳞片状毛和细毛。裸芽，为一对托叶包藏。叶互生，革质，椭圆形、卵状椭圆形或披针状椭圆形，长</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">－</span><span lang="EN-US"><font face="Times New Roman">6</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，宽</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">8</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，先端急尖或渐尖，基部圆形或宽楔形，侧脉</span><span lang="EN-US"><font face="Times New Roman">14</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">19</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">对，近平行，下面脉序突起，被鳞片状毛和细毛。花序腋生和顶生，穗状、总状或圆锥状，被柔毛；顶生花序长</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">12</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，分枝；腋生花序长</span><span lang="EN-US"><font face="Times New Roman">1.9</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">5.2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，分枝或不分枝；花萼</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">裂，内外均被毛；花瓣</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">，黄白色，具</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">14</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">条细纵纹；雄蕊</span><span lang="EN-US"><font face="Times New Roman">12</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">15</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">，两轮排列；子房</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">室，每室有胚珠</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">，柱头微</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">裂。坚果卵状椭圆形，长</span><span lang="EN-US"><font face="Times New Roman">2.2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">2.8 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，直径</span><span lang="EN-US"><font face="Times New Roman">1.1</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">1.5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，密被白色绢毛，先端急尖或渐尖，</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">裂；宿萼裂片增大而成</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">长</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">短的果翅，倒披针形或椭圆状披针形，长翅长</span><span lang="EN-US"><font face="Times New Roman">6</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">9</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，短翅长</span><span lang="EN-US"><font face="Times New Roman">3.5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米，具</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">一</span><span lang="EN-US"><font face="Times New Roman">7</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">条平行纵脉和细密的横脉与网脉。是一种高大的被子植物。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">地理分布</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;产云南南部、东南部（勐腊、马关、河口）及广西西南部局部地区，其分布面积约</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">平方公里，海拔下限</span><span lang="EN-US"><font face="Times New Roman">350</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，海拔上限</span><span lang="EN-US"><font face="Times New Roman">1100</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米。在中国分布于云南南部<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的猛腊、东南部的河口、马关等县和广西西南部的都安、巴马、龙州、那坡、田阳和大新等县一带。多生长在海拔</span><span lang="EN-US"><font face="Times New Roman">350-1,100</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米之间的山地峡谷及两侧坡地上，其分布面积约</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">平方公里。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;望天树分布于云南南部勐腊、河口、马关和广西巴马、都安等地。在分布地区的大树应严加保护。考虑到望天树种子寿命短，天然发芽成长为树十分困难，应研究产地的幼树更新和易地栽培。在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>植物园、昆明植物园和华南植物园等地都已栽培成功。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">栽培技术</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树虽很高大，但结实稀少，且落果严重，不易采种。</span><span lang="EN-US"><font face="Times New Roman">8--10</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">月果实</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">成熟，种子散落在地上，很快发芽或腐烂，寿命很短，所以采种必须及时，随采随播。如果需要储藏，必须应用苔藓和锯末混藏，并保持通风、低温和一定的湿度，否则完全丧失发芽力。播种后覆土要薄，保持土壤湿润，</span><span lang="EN-US"><font face="Times New Roman">1--3</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">天发芽。用塑料袋育苗则效果更好。幼苗培育两年后定植。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">药用价值</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">【药用部位】根皮、叶。</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">【功效】叶解毒。外用治湿疹。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">【化学成分】</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　从根皮的乙醇提取物中分离得到</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">个三萜化合物，分别鉴定为无羁萜（</span><span lang="EN-US"><font face="Times New Roman">I</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）、无羁萜</span><span lang="EN-US"><font face="Times New Roman">-29-</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">酸（</span><span lang="EN-US"><font face="Times New Roman">II</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）、乙酰齐墩果酸（</span><span lang="EN-US"><font face="Times New Roman">III</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）、咖啡齐墩果酸（</span><span lang="EN-US"><font face="Times New Roman">IV</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）、桦皮酸（</span><span lang="EN-US"><font face="Times New Roman">V</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">）。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">【药理作用】咖啡齐墩果酸对四氯化碳引起的小鼠实验性肝损伤有明显的保护作用。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #0000ff"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">发现过程</span></span></strong></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　我国的望天树，是</span><span lang="EN-US"><font face="Times New Roman">1974</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>州勐腊县境内的补蚌首次发现</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">的。当时，植物科学工作者根据勐腊县林业局提供的线索，到补蚌进行考察，发现在森林茂密的沟谷边，这样的树成片分布，它一股劲地往上生长，占地面积很小，一亩地范围内往往矗立着</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多棵，这里共有</span><span lang="EN-US"><font face="Times New Roman">100</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多棵，形成了一个小小的群落。植物科学工作者从它的叶、花、果实的结构、形态，鉴定出它是龙脑香科的一个新种，并赋予它一个形象生动的名字&mdash;&mdash;望天树，意思是&ldquo;仰头看天才能看到树顶&rdquo;。从此，在中国植物的目录中又多了&ldquo;望天树&rdquo;三个闪闪发光的大字。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #0000ff"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">编辑本段生物简介</span></span></strong></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　比一比中国树木中的&ldquo;巨人&rdquo;，目前能摘取中国最高树木桂冠的，恐怕就只有高可达</span><span lang="EN-US"><font face="Times New Roman">80</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的望天树了。</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树属于龙脑香科，柳安属。该属共</span><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">名成员，大多分布在东南亚一带，望天树是只有在我国云南才生长的特产珍稀树种。只分布在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的补蚌和广纳里新寨至景飘一带的</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">平方公里范围内。望天树的所在地，大部分为原始沟谷雨林及山地雨林。它们多成片生长，组成独立的群落，形成奇特的自然景观。生态学家们把它们视为热带雨林的标志树种。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树是我国的一级保护植物。一般高达</span><span lang="EN-US"><font face="Times New Roman">60</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米，胸径</span><span lang="EN-US"><font face="Times New Roman">100</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米左右，最粗的可达</span><span lang="EN-US"><font face="Times New Roman">300</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米。高耸挺拔的树干竖立于森林绿树丛中，比周围高</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">～</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的大树还要高出</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">～</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，真是直通九霄，大有刺破青天的架式。花期为</span><span lang="EN-US"><font face="Times New Roman">3-4</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">月。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;如果说望天树只是长得高，那当然不见得有那么珍贵，当然也无指望被列为国家一级保护植物了。它的名贵还在于它是龙脑香科植物，是热带雨林中的一个优势科。在东南亚，这个科的植物是热带雨林的代表树种之一，是热带雨林的重要标志之一。过去某些外国学者曾断言</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">中国十分缺乏龙脑香科植物</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">中国没有热带雨林</span><span lang="EN-US"><font face="Times New Roman">&quot;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">。然而，望天树的发现，不仅使得这些结论被彻底推翻，而且还证实了中国存在真正意义上的热带雨林。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;同龙脑香科的其他乔木一样，望天树以材质优良和单株积材率高而著名于世界木材市场，据资料记载，一棵</span><span lang="EN-US"><font face="Times New Roman">60</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米左右的望天树，主干木材可达十立方米以上。其材质较重，结构均匀，纹理通直而不易变形，加工性能良好，适合于制材工业和机械加工以及较大规格的木材用途，是一种优良的工业用材树种。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0"><span style="font-size: larger"><span lang="EN-US"><font face="Times New Roman">&nbsp;1996</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">月，世界野生生物基金会会长、英国爱丁堡公爵、菲得普亲王参观了<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>热带植物园，并亲手种植了一株望天树。如今，这株望天树已枝繁叶茂，亭亭如盖矣。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">观赏价值</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树是中国的一级保护植物。只有在中国云南才生长的特产珍稀树种。</span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">只分布在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的补蚌和广纳里新寨至景飘一带的</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">平方公里范围内。望天树的所在地，大部分为原始沟谷雨林及山地雨林。它们多成片生长，组成独立的群落，形成奇特的自然景观。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">科学价值</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树属于龙脑香科，柳安属。柳安属这个家族，共有</span><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">名成员，大多居住在东南亚一带。望天树只生长在中国云南，是中国特产的珍稀树种。望天树高大通直，叶互生，有羽状脉，黄色花朵排成圆锥花序，散发出阵阵幽香。其果实坚硬。望天树一般生长在</span><span lang="EN-US"><font face="Times New Roman">700-1000</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的沟谷雨林及山地雨林中，形成独立的群落类型，展示着奇特的自然景观。因此，学术界把它视为热带雨林的标志树种。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">经济价值</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;望天树生长很快，而且材质优良，材质坚硬、耐腐性强、纹理美观，是制造各种高级家具及用于造船、桥梁、建筑等的优质木材<a href=http://www.cqe7.com>旅游</a>项目。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;近年来，<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a><a href=http://www.cqe7.com>旅游</a>业日益红火，勐腊县自然保护局别出心裁，独辟径蹊，开发出新颖别致的<a href=http://www.cqe7.com>旅游</a>项目，即用网绳、木板、钢管等材料在高空将粗大的望天树连接起来，并美名其曰&ldquo;空中走廊&rdquo;。踏上晃晃悠悠的&ldquo;空中走廊&rdquo;，不仅可以体验到那种在高空摇荡的惊心动魄的刺激，还可以&ldquo;会当凌绝顶，一览众山小&rdquo;，从高空俯视整个热带雨林的全貌，感受大自然的神奇奥妙。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'"><a href=http://www.cqe7.com>旅游</a>发展</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　近年来，<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a><a href=http://www.cqe7.com>旅游</a>业日益红火，在<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>勐腊县补蚌自然保护区，</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">勐腊县自然保护局别出心裁，独辟径蹊，开发出新颖别致的<a href=http://www.cqe7.com>旅游</a>项目，即用网绳、木板、钢管等材料在高空将上百棵</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">－</span><span lang="EN-US"><font face="Times New Roman">70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米高的望天树连接起来，架设了一条高</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米、长</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">．</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">公里的&ldquo;空中廊&rdquo;。踏上晃晃悠悠的&ldquo;空中走廊&rdquo;，不仅可以体验到那种在高空摇荡的惊心动魄的刺激，还可以&ldquo;会当凌绝顶，一览众山小&rdquo;，从高空俯视整个热带雨林的全貌，感受大自然的神奇奥妙。望天树热带雨林主题公园神秘、古老、多情、北纬</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">度最后的雨林，<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>的奇迹&mdash;望天树热带雨林主题公园位于云南<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>勐腊县国家级自然保护区，是<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>州、老挝、泰国、绚甸等&ldquo;金四角&rdquo;国际社区的核心，也是地球上同一纬度地区唯一一片绿洲。</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">林海巨人</span></span></strong></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;中国著名的云南<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>热带密林中，在</span><span lang="EN-US"><font face="Times New Roman">70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年代发现了一种擎天巨树，它那秀美的姿态，高耸挺拔的树干，昂首挺立于万木之上，使人无法仰望见它的树顶，甚至灵敏的测高器在这里也无济于事。因此，人们称它为望天树。当地傣族人民称它为&ldquo;伞树&rdquo;。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树一般可高达</span><span lang="EN-US"><font face="Times New Roman">60</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米左右。人们曾对一棵进行测量和分析，发现望天树生长相当快，一棵</span><span lang="EN-US"><font face="Times New Roman">70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">岁的望天树，竟高达</span><span lang="EN-US"><font face="Times New Roman">50</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米。个别的甚至高达</span><span lang="EN-US"><font face="Times New Roman">80</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，胸径一般在</span><span lang="EN-US"><font face="Times New Roman">130 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米左右，最大可到</span><span lang="EN-US"><font face="Times New Roman">300 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">厘米。这些世上所罕见的巨树，棵棵耸立于沟谷雨林的上层，一般要高出第二层乔木</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米，真有直通九霄，刺破青天的气势！望天树属于龙脑香科，柳安属。柳安属这个家族，共有</span><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">名成员，大多居住在东南亚一带。望天树只生长在中国云南，是中国特产的珍稀树种。望天树高大通直，叶互生，有羽状脉，黄色花朵排成圆锥花序，散发出阵阵幽香。其果实坚硬。望天树一般生长在</span><span lang="EN-US"><font face="Times New Roman">700-1000</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米的沟谷雨林及山地雨林中，形成独立的群落类型，展示着奇特的自然景观。因此，学术界把它视为热带雨林的标志树种。望天树材质优良，生长迅速，生产力很高，一棵望天树的主干材积可达</span><span lang="EN-US"><font face="Times New Roman">10.5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">立方米，单株年平均生长量</span><span lang="EN-US"><font face="Times New Roman">0.085 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">立方米，是同林中其它树种的</span><span lang="EN-US"><font face="Times New Roman">2-3 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">倍。因此是很值得推广的优良树种。同时，它的木材中含有丰富的树胶，花中含有香料油，以及还有许多其它未知成分，尚待我们进一步分析研究和利用。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;由于望天树具有如此高的科学价值和经济价值，而它的分布范围又极其狭窄，所以被列为中国的一级保护植物。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;望天树还有一个极亲的&ldquo;孪生兄弟&rdquo;，名为擎天树。它其实是望天树的变种，也是在</span><span lang="EN-US"><font face="Times New Roman">70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">年代于广西发现的。这擎天树的外形与其兄弟极其相似，也异常高大，常达</span><span lang="EN-US"><font face="Times New Roman">60-65 </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">米，光枝下高就有</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米。其材质坚硬、耐腐性强，而且刨切面光洁，纹理美观，具有极高的经济价值和科学研究价值。擎天树仅仅发现生长在广西的弄岗自然保护区，因此同样受到严格的保护。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt">&nbsp;</p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="color: #ff0000"><strong><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'"><a href=http://www.cqe7.com>旅游</a>信息</span></span></strong></span></p>
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<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　　望天树<a href=http://www.cqe7.com>旅游</a>景点</span><span lang="EN-US"><font face="Times New Roman">-</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">位于云南省</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'"><a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a></span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">勐腊</span><span lang="EN-US"><font face="Times New Roman">, </font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">在距勐腊</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">公里补蛙原始湿</span><span lang="EN-US"><span style="mso-spacerun: yes"><font face="Times New Roman">&nbsp; </font></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">望天树</span></span><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">润雨林内，生长着</span><span lang="EN-US"><font face="Times New Roman">40-70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米高的望天树，架设在望天树上的&ldquo;空中走廊&rdquo;，它把公路两旁的原始森林连接起来，可在广阔的视野上。</span><font face="Times New Roman"> </font><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">　</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 21pt; mso-char-indent-count: 2.0"><span style="font-size: larger"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">&nbsp;在距勐腊</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">公里补蛙原始湿润雨林内，生长着</span><span lang="EN-US"><font face="Times New Roman">40-70</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多米高的望天树，架设在望天树上的&ldquo;空中走廊&rdquo;，全长</span><span lang="EN-US"><font face="Times New Roman">2.5</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">公里，它把公路两旁的原始森林连接起来，可在广阔的视野上尽情地领略热带雨林的风光。沿着密林中的溪流，钻入幽深沟谷，还可观赏热带植物群落，森林里还生存着野象、野牛、长臂猿等动物</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多种；生长着竹柏、石梓、苏铁、云南鸡毛松、<a href=http://www.cqe7.com/jd/gnjd/2011/0123/386.html>西双版纳</a>团花树等十多种珍贵树木，并有珍贵药用植物马前子、美橙木，花叶龙血树等</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'">多种。</span></span></p>
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